Estimation of the nocturnal boundary layer height over the Central Amazon forest using turbulence measurements

IF 5.6 1区农林科学 Q1 AGRONOMY

Agricultural and Forest Meteorology Pub Date : 2025-03-27 DOI:10.1016/j.agrformet.2025.110469

Anne C.S. Mendonça , Cléo Q. Dias-Júnior , Otávio C. Acevedo , Daniel Magnabosco Marra , Ivan M. Cely-Toro , Gilberto Fisch , Daiane V. Brondani , Antônio O. Manzi , Bruno T.T. Portela , Carlos A. Quesada , Luca Mortarini

{"title":"Estimation of the nocturnal boundary layer height over the Central Amazon forest using turbulence measurements","authors":"Anne C.S. Mendonça , Cléo Q. Dias-Júnior , Otávio C. Acevedo , Daniel Magnabosco Marra , Ivan M. Cely-Toro , Gilberto Fisch , Daiane V. Brondani , Antônio O. Manzi , Bruno T.T. Portela , Carlos A. Quesada , Luca Mortarini","doi":"10.1016/j.agrformet.2025.110469","DOIUrl":null,"url":null,"abstract":"<div><div>The nocturnal boundary layer height (<span><math><msub><mrow><mi>h</mi></mrow><mrow><mi>N</mi></mrow></msub></math></span>) was investigated using one year of data (2022) collected by sonic anemometers installed at 11 heights, above the canopy top on the towers of the Amazon Tall Tower Observatory (ATTO) in Central Amazon. Unlike previous assessments relying on indirect methodologies, in the present study <span><math><msub><mrow><mi>h</mi></mrow><mrow><mi>N</mi></mrow></msub></math></span> was directly estimated from measurements of turbulent fluxes of momentum and kinematic sensible heat. Our findings highlighted the dynamic effect of forest topography: under northeast winds, associated with lower roughness, <span><math><msub><mrow><mi>h</mi></mrow><mrow><mi>N</mi></mrow></msub></math></span> varied between 81 m during very stable stratification and 172 m in neutral conditions. Conversely, under southeast winds, where roughness is higher, <span><math><msub><mrow><mi>h</mi></mrow><mrow><mi>N</mi></mrow></msub></math></span> ranged between 81 and 223 m. These estimates reveal the significant control exerted by atmospheric stability and topography on the <span><math><msub><mrow><mi>h</mi></mrow><mrow><mi>N</mi></mrow></msub></math></span> variability. Interestingly, under neutral and weakly stable stratifications our finds align with the theoretical parameterization proposed in previous works. However, discrepancies emerged in very stable stratification and when the boundary layer structure is influenced by topography.</div></div>","PeriodicalId":50839,"journal":{"name":"Agricultural and Forest Meteorology","volume":"367 ","pages":"Article 110469"},"PeriodicalIF":5.6000,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Agricultural and Forest Meteorology","FirstCategoryId":"97","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0168192325000899","RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"AGRONOMY","Score":null,"Total":0}

引用次数: 0

Abstract

The nocturnal boundary layer height (

h_{N}

) was investigated using one year of data (2022) collected by sonic anemometers installed at 11 heights, above the canopy top on the towers of the Amazon Tall Tower Observatory (ATTO) in Central Amazon. Unlike previous assessments relying on indirect methodologies, in the present study

h_{N}

was directly estimated from measurements of turbulent fluxes of momentum and kinematic sensible heat. Our findings highlighted the dynamic effect of forest topography: under northeast winds, associated with lower roughness,

h_{N}

varied between 81 m during very stable stratification and 172 m in neutral conditions. Conversely, under southeast winds, where roughness is higher,

h_{N}

ranged between 81 and 223 m. These estimates reveal the significant control exerted by atmospheric stability and topography on the

h_{N}

variability. Interestingly, under neutral and weakly stable stratifications our finds align with the theoretical parameterization proposed in previous works. However, discrepancies emerged in very stable stratification and when the boundary layer structure is influenced by topography.

查看原文本刊更多论文

利用湍流测量估计亚马孙中部森林夜间边界层高度

利用安装在亚马逊中部亚马逊高塔天文台（ATTO）塔顶上方11个高度的声速风速仪收集的一年（2022年）数据，研究了夜间边界层高度（hN）。与以往依赖间接方法的评估不同，在本研究中，hN是直接通过测量动量和运动感热的湍流通量来估计的。我们的研究结果强调了森林地形的动态影响：在东北风下，与较低的粗糙度相关，hN在非常稳定的分层期间变化在81 m和中性条件下变化在172 m之间。相反，在东南风向下，粗糙度较大，hN在81 ~ 223 m之间。这些估算结果揭示了大气稳定性和地形对hN变率的重要控制作用。有趣的是，在中性和弱稳定的分层下，我们的发现与先前工作中提出的理论参数化一致。然而，在非常稳定的分层和边界层结构受地形影响时，差异就出现了。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Agricultural and Forest Meteorology 农林科学-林学

CiteScore

10.30

自引率

9.70%

发文量

415

审稿时长

69 days

期刊介绍： Agricultural and Forest Meteorology is an international journal for the publication of original articles and reviews on the inter-relationship between meteorology, agriculture, forestry, and natural ecosystems. Emphasis is on basic and applied scientific research relevant to practical problems in the field of plant and soil sciences, ecology and biogeochemistry as affected by weather as well as climate variability and change. Theoretical models should be tested against experimental data. Articles must appeal to an international audience. Special issues devoted to single topics are also published. Typical topics include canopy micrometeorology (e.g. canopy radiation transfer, turbulence near the ground, evapotranspiration, energy balance, fluxes of trace gases), micrometeorological instrumentation (e.g., sensors for trace gases, flux measurement instruments, radiation measurement techniques), aerobiology (e.g. the dispersion of pollen, spores, insects and pesticides), biometeorology (e.g. the effect of weather and climate on plant distribution, crop yield, water-use efficiency, and plant phenology), forest-fire/weather interactions, and feedbacks from vegetation to weather and the climate system.